package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Slf4j
@Service
public class OrderServiceImpl implements OrderService {
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    @Autowired
    private UserMapper userMapper;

    @Value("${sky.shop.address}")
    private String shopAddress;

    @Value("${sky.baidu.ak}")
    private String ak;
    @Autowired
    private WebSocketServer webSocketServer;


    @Transactional
    @Override
    public OrderSubmitVO submit(OrdersSubmitDTO ordersSubmitDTO) {
        //1.先处理可能会出现的异常
        //1.1 地址簿为空
        AddressBook byId = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if (byId == null) {
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }
        //1.2 购物车为空
        ShoppingCart shoppingCart = new ShoppingCart();
        Long userId = BaseContext.getCurrentId();
        shoppingCart.setUserId(userId);
        List<ShoppingCart> select = shoppingCartMapper.select(shoppingCart);
        if (select == null) {
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }
        String address = byId.getProvinceName() + byId.getCityName() + byId.getDistrictName() + byId.getDetail();
        //校验是否超出配送范围
        //checkOutOfRange(address);
        //2. 插入一条订单数据
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO, orders);
        orders.setAddress(address); 
        orders.setOrderTime(LocalDateTime.now());
        orders.setPayStatus(Orders.UN_PAID);
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setPhone(byId.getPhone());
        orders.setConsignee(byId.getConsignee());
        orders.setUserId(userId);
        orderMapper.insert(orders);

        //3.插入n条订单明细数据
        List<OrderDetail> list = new ArrayList<>();
        for (ShoppingCart cart : select) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart, orderDetail);
            orderDetail.setOrderId(orders.getId());
            list.add(orderDetail);
        }
        orderDetailMapper.insert(list);
        //4.删除购物车数据
        shoppingCartMapper.deleteByUserId(userId);
        //5.封装返回对象
        return OrderSubmitVO.builder()
                .id(orders.getId())
                .orderNumber(orders.getNumber())
                .orderAmount(orders.getAmount())
                .orderTime(orders.getOrderTime())
                .build();
    }

    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

        //调用微信支付接口，生成预支付交易单
        JSONObject jsonObject = weChatPayUtil.pay(
                ordersPaymentDTO.getOrderNumber(), //商户订单号
                new BigDecimal(0.01), //支付金额，单位 元
                "苍穹外卖订单", //商品描述
                user.getOpenid() //微信用户的openid
        );

        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {
        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();
        orderMapper.update(orders);

        //像管理端发送来单提醒的消息
        Map map = new HashMap();
        map.put("type", 1);
        map.put("orderId", ordersDB.getId());
        map.put("content", "订单号: " + outTradeNo);
        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);
    }

    @Override
    public PageResult selectHistoryOrder(int page, int pageSize, Integer status) {
        OrdersPageQueryDTO ordersPageQueryDTO = OrdersPageQueryDTO.builder()
                .page(page)
                .pageSize(pageSize)
                .status(status)
                .userId(BaseContext.getCurrentId()).build();
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());
        List<OrderVO> list = orderMapper.selectHistoryOrder(ordersPageQueryDTO);
        for (OrderVO orderVO : list) {
            List<OrderDetail> list1 = orderDetailMapper.selectByOrderId(orderVO.getId());
            orderVO.setOrderDetailList(list1);
            orderVO.setOrderDishes(getOrderDishesStr(orderVO));
        }
        Page<OrderVO> page1 = (Page<OrderVO>) list;
        return new PageResult(page1.getTotal(), page1.getResult());
    }

    @Override
    public OrderVO selectHistoryOrderDetail(Long id) {
        Orders orders = orderMapper.selectById(id);
        List<OrderDetail> orderDetails = orderDetailMapper.selectByOrderId(id);
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders, orderVO);
        orderVO.setOrderDetailList(orderDetails);
        orderVO.setOrderDishes(orderDetails.toString());
        return orderVO;
    }

    @Override
    public void cancel(Long id) throws Exception {
        // 根据id查询订单
        Orders ordersDB = orderMapper.selectById(id);

        // 校验订单是否存在
        if (ordersDB == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        if (ordersDB.getStatus() > 2) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersDB.getId());

        // 订单处于待接单状态下取消，需要进行退款
        if (ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            //调用微信支付退款接口
            weChatPayUtil.refund(
                    ordersDB.getNumber(), //商户订单号
                    ordersDB.getNumber(), //商户退款单号
                    new BigDecimal(0.01),//退款金额，单位 元
                    new BigDecimal(0.01));//原订单金额

            //支付状态修改为 退款
            orders.setPayStatus(Orders.REFUND);
        }

        // 更新订单状态、取消原因、取消时间
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason("用户取消");
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    @Override
    public void repetition(Long id) {
        List<ShoppingCart> list = new ArrayList<>();
        List<OrderDetail> orderDetails = orderDetailMapper.selectByOrderId(id);
        for (OrderDetail orderDetail : orderDetails) {
            ShoppingCart shoppingCart = new ShoppingCart();
            BeanUtils.copyProperties(orderDetail, shoppingCart);
            shoppingCart.setUserId(BaseContext.getCurrentId());//不加会取消订单??????
            shoppingCart.setCreateTime(LocalDateTime.now());
            list.add(shoppingCart);
        }
        shoppingCartMapper.insertMore(list);
    }

    @Override
    public OrderStatisticsVO statistics() {
        Integer confirmed = orderMapper.countStatus(Orders.CONFIRMED);
        Integer deliveryInProgress = orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);
        Integer toBeConfirmed = orderMapper.countStatus(Orders.TO_BE_CONFIRMED);
        OrderStatisticsVO orderStatisticsVO = OrderStatisticsVO.builder()
                .confirmed(confirmed)
                .deliveryInProgress(deliveryInProgress)
                .toBeConfirmed(toBeConfirmed)
                .build();
        return orderStatisticsVO;
    }

    @Override
    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());
        List<OrderVO> list = orderMapper.selectHistoryOrder(ordersPageQueryDTO);
        for (OrderVO orderVO : list) {
            List<OrderDetail> orderDetails = orderDetailMapper.selectByOrderId(orderVO.getId());
            orderVO.setOrderDetailList(orderDetails);
            orderVO.setOrderDishes(getOrderDishesStr(orderVO));
        }
        Page<OrderVO> page1 = (Page<OrderVO>) list;
        return new PageResult(page1.getTotal(), page1.getResult());
    }

    @Override
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) throws Exception {
        Orders ordersDB = orderMapper.selectById(ordersRejectionDTO.getId());
        if (!ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //支付状态
        Integer payStatus = ordersDB.getPayStatus();
        if (payStatus == Orders.PAID) {
            //用户已支付，需要退款
            String refund = weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));
            log.info("申请退款：{}", refund);
        }
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setRejectionReason(ordersRejectionDTO.getRejectionReason());
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    @Override
    public void adminCancel(OrdersCancelDTO ordersCancelDTO) throws Exception {
        Orders ordersDB = orderMapper.selectById(ordersCancelDTO.getId());
        Integer payStatus = ordersDB.getPayStatus();
        if (payStatus == Orders.PAID) {
            //用户已支付，需要退款
            String refund = weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));
            log.info("申请退款：{}", refund);
        }
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        orders.setCancelTime(LocalDateTime.now());
        orders.setCancelReason(ordersCancelDTO.getCancelReason());
        orders.setStatus(Orders.CANCELLED);
        orderMapper.update(orders);
    }

    private String getOrderDishesStr(OrderVO orderVO) {
        // 查询订单菜品详情信息（订单中的菜品和数量）
        List<OrderDetail> orderDetailList = orderDetailMapper.selectByOrderId(orderVO.getId());

        // 将每一条订单菜品信息拼接为字符串（格式：宫保鸡丁*3；）
        List<String> orderDishList = orderDetailList.stream().map(x -> {
            String orderDish = x.getName() + "*" + x.getNumber() + ";";
            return orderDish;
        }).collect(Collectors.toList());

        // 将该订单对应的所有菜品信息拼接在一起
        return String.join("", orderDishList);
    }

    /**
     * 接单
     *
     * @param ordersConfirmDTO
     */
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
        Orders orders = Orders.builder()
                .id(ordersConfirmDTO.getId())
                .status(Orders.CONFIRMED)
                .build();

        orderMapper.update(orders);
    }

    /**
     * 派送订单
     *
     * @param id
     */
    public void delivery(Long id) {
        // 根据id查询订单
        Orders ordersDB = orderMapper.selectById(id);

        // 校验订单是否存在，并且状态为3
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        // 更新订单状态,状态转为派送中
        orders.setStatus(Orders.DELIVERY_IN_PROGRESS);

        orderMapper.update(orders);
    }
    /**
     * 完成订单
     *
     * @param id
     */
    public void complete(Long id) {
        // 根据id查询订单
        Orders ordersDB = orderMapper.selectById(id);

        // 校验订单是否存在，并且状态为4
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        // 更新订单状态,状态转为完成
        orders.setStatus(Orders.COMPLETED);
        orders.setDeliveryTime(LocalDateTime.now());

        orderMapper.update(orders);
    }

    @Override
    public void reminder(Long id) {
        //催单
        Orders orders = orderMapper.selectById(id);
        if (orders == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Map map = new HashMap();
        map.put("type", 2);
        map.put("orderId", id);
        map.put("content", "订单号: " + orders.getNumber());
        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);
    }

    private void checkOutOfRange(String address) {
        Map map = new HashMap();
        map.put("address",shopAddress);
        map.put("output","json");
        map.put("ak",ak);

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败");
        }

        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;

        map.put("address",address);
        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("收货地址解析失败");
        }

        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin",shopLngLat);
        map.put("destination",userLngLat);
        map.put("steps_info","0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("配送路线规划失败");
        }

        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if(distance > 5000){
            //配送距离超过5000米
            throw new OrderBusinessException("超出配送范围");
        }
    }
}
